parent firm - parent company; a company that owns or controls another company - บริษัทแม่ Articles found: Strong baht to be short-lived, says Finance Minister (08/08/2017) Police to monitor what public reads on web: Editorial (24/05/2017) 4G default explained: Chinese investor delay (23/03/2016) 4G: Newcomer JAS fails to make payment (22/03/2016)